tree 2215ae62e223b3d15ec607d880462dac2d961472
parent 1e33487f3354790b2755f197e0a1e2546b3e7883
author Łukasz Rymanowski <rlukasz@google.com> 1646644758 +0000
committer Łukasz Rymanowski <rlukasz@google.com> 1646644758 +0000

vc: Extend VCP with support for volume control offset service

This patch adds support to handle volume control offset service.
This can be use by peer device to
1) use it to control balance in case of coordinated audio sets (e.g.
earbuds): This feature is exposed in the API
2) expose multiple output speakers and add a way to control the audio
offset compared to global volume: This feature is not exposed in the API yet

Bug: 150670922
Sponsor: @jpawlowski
Test: atest --host bluetooth_vc_test
Change-Id: I7c722048a27ff6c1c55395d05e8c3b6e7a68f3e9